Question
5. Eliminate the y in the following system of equations. What is the result when you add the two equations? ) x+y=2 3x-4y=27 7x=35 4x=29 x=-23 7x=29
Solution
4.2
(205 Votos)
Carlinhos
Profissional · Tutor por 6 anos
Resposta
To eliminate y in the given system of equations, we can multiply the first equation by 4 and the second equation by 1, then add the two equations together.Multiplying the first equation by 4, we get:4(x + y)4x + 4y = 8The second equation remains the same:3x - 4y = 27Now, we can add the two equations together:(4x + 4y) + (3x - 4y) = 8 + 274x + 3x = 357x = 35Therefore, the result when you add the two equations is 7x = 35.